On Aug. 31, 1990, Ken Griffey Jr. and Sr. became the first father-son teammates in MLB history

1991 Mother's Cookies Ken Griffey Jr K.Griffey Jr.& Sr. (Holding Gloves)

WATCH: Father & son Griffey hit back-to-back HRs

List of second-generation Major League Baseball players - Wikipedia

Indianapolis Indians - We celebrate #BlackHistoryMonth today by recognizing Ken Griffey, our 1973 Team MVP and the American Association Rookie of the Year who led that year's squad with a .327 average

On Aug. 31, 1990, Ken Griffey Jr. and Sr. became the first father-son teammates in MLB history

From Attempted Suicide to MLB Superstar-The Life and Very Complicated Times of Ken Griffey Jr.

Ken Griffey Sr. and Jr. become first father/son combo to appear in the same lineup

Ken Griffey Jr. and Sr. Hitting Back-to-Back Home Runs is Still the Coolest Father-Son Moment in Sports History

Big Red: Baseball, Fatherhood, and My Life in the Big Red Machine: 9781600785443: Griffey, Ken, Pepe, Phil, Foster, George: Books

DraftKings on X: On Aug. 31, 1990, 40-year-old Ken Griffey Sr. and 20-year-old Ken Griffey Jr. became the first father and son to play as teammates in an MLB game. Griffey Sr. called it his greatest career accomplishment. Celebrate the great dads in your life

JAWS: Ken Griffey Jr. a lock for Hall of Fame enshrinement in 2016 - Sports Illustrated

Ken Griffey Sr. and Jr. become the first father-son duo to ever play together

Ken Griffey Sr.: A look back at the member of the Big Red Machine

Ken Griffey Sr. once revealed his greatest achievement in famed MLB career